<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            * {
                font-size: 28px
            }
        </style>
    </head>

    <body>
        <div>测试简单请求界面</div>
        <button id="ajaxBtn">AjAX局部刷新</button>
        <div class="ajax-change" id="responseDiv">change区域</div>
        <script>
            function test() {
                var xhrObj = new XMLHttpRequest();
                xhrObj.onreadystatechange = function () {
                    if (xhrObj.readyState == 4 && xhrObj.status == 200) {
                        console.log(xhrObj.responseText);
                        document.getElementById("responseDiv").innerHTML = xhrObj.responseText;
                    }
                };
                xhrObj.open("post", "http://127.0.0.1:3000/report", true);
                xhrObj.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
                xhrObj.send("xhr=1");
            }

            document.getElementById("ajaxBtn").addEventListener("click", function () {
                test();
            });
        </script>
    </body>
</html>
